I think you are going to be proven correct...
Why the drop to 106, 108, 112? Amps were fine 33-38 Matthew J. Willis, CET Automatic Fire Sprinklers Norred Fire Systems L.L.C. 318-387-1134 Voice 318-387-1163 Facsimile [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Todd Williams Sent: Wednesday, August 26, 2009 11:35 AM To: [email protected] Subject: Re: 3 from 1 Thanks guys. I didn't look in the commentary. I rejected the idea because it seemed like it could be more trouble than it is worth. At 12:26 PM 8/26/2009, you wrote: >Todd, > >20-A.9.2.2 in the 2007 edition. Not prohibited but not recommended. > >On Wed, Aug 26, 2009 at 9:12 AM, Todd Williams<[email protected]> wrote: > > You may need to have an electrical engineer review the installation. > > I did a single phase pump a few years ago and ran into electrical > > problems (for which I was blamed). Hired an EE and he went through > > and found the electrician messed up the installation from the service > > right through to the pump as well as the generator feed and > > connection. Didn't have a converter, but did have two transformers > > because the electrician told us the wrong voltage (208 v. 240 - for > > which I was also blamed). > > > > BTW, what section of the Code says Phase Converters are not allowed? > > I couldn't find that at the time, but had rejected the idea anyway. > > > > > > > > > > At 11:58 AM 8/26/2009, you wrote: > >>I need some education of Phase Converters. > >> > >> > >> > >>A 300 gpm Fire Pump (Tank fed), is supplied by one of these things. Single > >>phase only is available, so one of these has been installed to > make it work. > >>Installed in '06-07ish, just replaced main board in controller. I was there > >>to do test following part replace. 240vac, dropped to 106-108 across the 3 > >>as indicated on panel. Middle leg showed 422vac in event log, as high peak. > >>When started, pump shaft (vertical) jumped up and down repeatedly. We red > >>tagged it and are waiting on word from electricians. Pump Motor checked out > >>fine. I know they are not allowed, but it was approved, so., I > just test it. > >> > >> > >> > >>R/ > >> > >>Matt > >> > >> > >> > >>Matthew J. Willis, CET > >> > >>Automatic Fire Sprinklers > >> > >>Norred Fire Systems L.L.C. > >> > >>318-387-1134 Voice > >> > >>318-387-1163 Facsimile > >> > >>[email protected] > >> > >> > >> > >>_______________________________________________ > >>Sprinklerforum mailing list > >>[email protected] > >>http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > Todd G. Williams, PE > > Fire Protection Design/Consulting > > Stonington, Connecticut > > www.fpdc.com > > 860.535.2080 > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > > >-- >Ron Greenman >Instructor >Fire Protection Engineering >Bates Technical College >Tacoma, WA > >Member: >SFPE, ASCET, NFPA, AFSA, NFSA AFAA >_______________________________________________ >Sprinklerforum mailing list >[email protected] >http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut www.fpdc.com 860.535.2080 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
